Here I have open three text apparati...Tyndale House GNT, SBLGNT, and NA28. The SBLGNT works differently, citing Gk texts rather than manuscripts (which is fine...helpful, in fact).
The THGNT and NA28 are where the puzzling difference is. Here are screenshots of a mouse-hover over the Codes Sinaiticus aleph. Note that the THGNT popup give much more useful information, including the common name as well as the aleph and number designator; the NA28 does not even give the common name of the codex.
Is this an oversight or is it something required by the NA folks?

